.fl{
  float: left;
}
.fr{
  float: right;
}
.over{
  overflow: hidden;
}
.text-center{
  text-align: center;
}
.submit{
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  line-height: 1.2rem;
  background-color: #67C23A;
  color: #fff;
  text-align: center;
}
img.max{
  max-width: 100%;
}
